$avatar: "https://mp.weixin.qq.com/wxopen/basicprofile?action=get_headimg&token=894020456&t=1583913611010";
#toTop{
  right: 3vw;
  bottom: 4vh;
  position: fixed;
}
.left {
  transition: 1s;
  height: 100%;
  padding-top: 70px;
}
.relative {
  position: relative;
}
.leftTitle {
  position: absolute;
  color: wheat;
  z-index: 1;
  width: 100%;
  text-align: center;
}
.userImg {
  margin: 10px auto;
  width: 50px;
  height: 50px;
  overflow: hidden;
  border-radius: 50%;
  text-align: center;
  cursor: pointer;
  .bruce{
      width: 100%;
      height: 100%;
  .avatar-shadow {
    position: relative;
    border-radius: 100%;
    width: 100%;
    height: 100%;
    background: url($avatar) no-repeat center/cover;
    &::after {
      position: absolute;
      left: 0;
      top: 10%;
      z-index: -1;
      border-radius: 100%;
      width: 100%;
      height: 100%;
      background: inherit;
      filter: blur(10px) brightness(80%) opacity(0.8);
      content: "";
      transform: scale(0.95);
    }
  }
}
}
